Sort tags by age

This adds a function to compare timestamps and then uses it as callback
for qsort() before printing out tags.

Signed-off-by: Lars Hjemli <hjemli@gmail.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/ui-summary.c b/ui-summary.c
index c684628..43582da 100644
--- a/ui-summary.c
+++ b/ui-summary.c
@@ -1,24 +1,41 @@
 /* ui-summary.c: functions for generating repo summary page
  *
  * Copyright (C) 2006 Lars Hjemli
  *
  * Licensed under GNU General Public License v2
  *   (see COPYING for full license text)
  */
 
 #include "cgit.h"
 
 static int header;
 
+static int cmp_tag_age(void *a, void *b)
+{
+	struct refinfo *r1 = *(struct refinfo **)a;
+	struct refinfo *r2 = *(struct refinfo **)b;
+
+	if (r1->tag->tagger_date != 0 && r2->tag->tagger_date != 0)
+		return r2->tag->tagger_date - r1->tag->tagger_date;
+
+	if (r1->tag->tagger_date == 0 && r2->tag->tagger_date == 0)
+		return 0;
+
+	if (r1 == 0)
+		return +1;
+
+	return -1;
+}
+
 static void cgit_print_branch(struct refinfo *ref)
 {
 	struct commit *commit;
 	struct commitinfo *info;
 	char *name = (char *)ref->refname;
 
 	commit = lookup_commit(ref->object->sha1);
 	// object is not really parsed at this point, because of some fallout
 	// from previous calls to git functions in cgit_print_log()
 	commit->object.parsed = 0;
 	if (commit && !parse_commit(commit)){
 		info = cgit_parse_commit(commit);
@@ -147,24 +164,25 @@ static void cgit_print_branches()
 
 static void cgit_print_tags()
 {
 	struct reflist list;
 	int i;
 
 	header = 0;
 	list.refs = NULL;
 	list.alloc = list.count = 0;
 	for_each_tag_ref(cgit_refs_cb, &list);
 	if (list.count == 0)
 		return;
+	qsort(list.refs, list.count, sizeof(*list.refs), cmp_tag_age);
 	print_tag_header();
 	for(i=0; i<list.count; i++)
 		print_tag(list.refs[i]);
 }
 
 static void cgit_print_archives()
 {
 	header = 0;
 	for_each_ref(cgit_print_archive_cb, NULL);
 	if (header)
 		html("</table>");
 }